/* 全局按钮样式重置，去除所有描边效果 */
button, 
.btn,
.button,
wx-button,
.uni-button {
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  -webkit-appearance: none !important;
  -moz-appearance: none !important;
  appearance: none !important;
}

/* 微信小程序特定按钮样式重置 */
button[type="default"],
button[type="primary"],
button[type="warn"] {
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  -webkit-appearance: none !important;
}

/* 防止伪元素边框 */
button::after,
.btn::after,
.button::after {
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  display: none !important;
}